72 



great pleasure in dedicating to the learned Professor. It is 

 characterised thus : — 

 Tatea. Gen. nov. 



Freshwater shells of elongate pyramidal form ; animal 

 with a truncate foot, long tentacles, calcareous operculum, 

 with a vertical submarginal claw. 



Tatea HUONEXsis.=^?/f/imJ« huonensis nobis. 



Planorbis meridionalis. (Brazier. Froc. Lin. Soc. 

 N.S.W., vol. 1, p. 20.) =P. tasmanicus nobis. 



Since my monograj^h has been written, Mr. R. M. Johnston 

 has carried on the subject with that zeal, industry, and accu- 

 racy which are characteristic of him. I believe he has dis- 

 covered several new species. In reconsidering the whole 

 subject, some new place will probably have to be found for 

 the species which I described as Amjpullaria tasmanica. (Pro- 

 ceedings, for 1876, p. 117.) 



The Limnect Hobartonensis of my monograph, I find on 

 comparison, to be quite undistinguishable from L. peregra, of 

 Muller {Vermium terrest. et Fluv. Leipsic, 1773J, one of the 

 most wide-sj^read forms. An Australian habitat is, however, 

 quite a novelty. We must suppose that it has been introduced 

 from ships' water-casks. 



I note further, that in my monograph the genus Fomatiopsis 

 is by mistake printed Fomic 



